I didn't know that Overlord Lover was the name of a novel, nor did I know if there was an animation. If you can provide more information or context, I will try my best to answer your questions.
You can try searching on some well - known fanfiction websites like Archive of Our Own (AO3). It has a large collection of various fanfictions, and there might be some related to 'Overlord Aura Lemon' there.
One interesting story could be about how the overlord's aura affects the characters in unique ways within the fanfiction world. For example, it might enhance their abilities in unexpected manners.
In most cases, the Overlord anime doesn't go beyond the manga. It relies on the manga as its source and keeps in step with it. There might be minor variations, but not to the extent of being ahead.
Overlord is about a powerful gamer trapped in a virtual game world as his overpowered skeletal character. He builds a dominion and faces various challenges and enemies.
In general, the Overlord manga does have more story content than the anime. However, the anime's adaptation is well-done and has its own charm. Some people prefer one over the other depending on their preferences.
The Overlord game was related to anime. Overlord was a light novel written by 486, which had also been adapted into an animation and game. In the game, the word 'overlord' referred to a powerful existence with power and ability that surpassed that of humans. The anime told the story of the conflict between humans and dragons, and also added superpowers, magic, and other elements.
There was no love story in Overlord anime. Although Overlord was a work with racial and fantasy elements as its theme, it did not involve love plots. The main character, Amber, was just a powerful warrior whose life revolved around battles and adventures. Although some characters had bonds and emotional exchanges, these feelings only existed to express their friendship and loyalty, and did not develop into a romantic relationship.
There might be a fanfiction where the Overlord's power is combined with Naruto's. For example, the Overlord's ability to control undead could be merged with Naruto's shadow clone jutsu, creating a whole new kind of combat strategy. This could lead to really exciting battles against common enemies in both universes.